Journal
FEBS LETTERS
Volume 584, Issue 15, Pages 3458-3463Publisher
WILEY
DOI: 10.1016/j.febslet.2010.06.046
Keywords
Acibenzolar-S-methyl; Acibenzolar; Salicylic acid-binding protein 2; Systemic acquired resistance; Methyl salicylic acid
Funding
- ETSU-RDC [10-018M]
- Department of Biological Sciences, ETSU
- Direct For Biological Sciences
- Div Of Molecular and Cellular Bioscience [1022077] Funding Source: National Science Foundation
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Tobacco SABP2, a 29 kDa protein catalyzes the conversion of methyl salicylic acid (MeSA) into salicylic acid (SA) to induce SAR. Pretreatment of plants with acibenzolar-S-methyl (ASM), a functional analog of salicylic acid induces systemic acquired resistance (SAR). Data presented in this paper suggest that SABP2 catalyzes the conversion of ASM into acibenzolar to induce SAR. Transgenic SABP2-silenced tobacco plants when treated with ASM, fail to express PR-1 proteins and do not induce robust SAR expression. When treated with acibenzolar, full SAR is induced in SABP2-silenced plants. These results show that functional SABP2 is required for ASM-mediated induction of resistance. 2010 Federation of European Biochemical Societies. Published by Elsevier B.V. All rights reserved.
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